This company is an ISO 9001: 2015, ISO 14001: 2015, OHSAS 18001: 2007, and ISO50001: 2011, GB/T29490-2013 certified enterprise in China, Zhengdan has been evaluated as a Green Unit in Zhenjiang city, Blue Enterprise of Corporation Environmental Behavior Rating, Level II Enterprise of Safety Production Standardization, Standard-Implementation Enterprise of Corporate Credit Management in Jiangsu Province and Credit Rating AAA Enterprise, etc.